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    • 2. 发明申请
    • METHOD OF MAKING AN EXTRUDED THIN FILM, THIN FILM SO PRODUCED AND ITS USE
    • 制造挤出薄膜的方法,由此产生的薄膜及其用途
    • WO2018013409A1
    • 2018-01-18
    • PCT/US2017/041022
    • 2017-07-07
    • SABIC GLOBAL TECHNOLOGIES B.V.SANNER, Mark A.
    • SANNER, Mark A.JOHNSON, PeterGALLUCCI, Robert RussellEHRENSBECK, Franklin
    • B29B9/06B29B9/12B29B9/16B29C47/00B29C47/14
    • Method of making an extruded thin film comprising: melt filtering an amorphous thermoplastic composition comprising an amorphous thermoplastic polymer with a glass transition temperature Tg of 130°C to 280°C to form a melt filtered amorphous thermoplastic composition; extruding the melt filtered amorphous thermoplastic composition into strands at a temperature TE; cooling the strands to a temperature Tc to form cooled strands; cutting the cooled strands into pellets having a length of 2.0 to 6.0 millimeters; treating the pellets at a temperature Ts to remove particulates having at least one of length, width, and height of less than 0.5 millimeters to form treated pellets; melting the treated pellets in an extruder at a temperature Tp to form a molten composition; and extruding the molten composition through a flat die to form a film having an average thickness less than or equal to 50 micrometers.
    • 制备挤出薄膜的方法包括:将包含玻璃化转变温度Tg为130℃-280℃的无定形热塑性聚合物的无定形热塑性组合物熔融过滤以形成熔体过滤的无定形热塑性组合物 ; 在温度TE下将熔体过滤的无定形热塑性组合物挤出成股; 将股线冷却至温度Tc以形成冷却的股线; 将冷却的股线切成长度为2.0至6.0毫米的粒料; 在温度Ts下处理丸粒以去除长度,宽度和高度中的至少一个小于0.5毫米的颗粒以形成处理后的丸粒; 在温度Tp下在挤出机中熔化处理过的粒料以形成熔融组合物; 并通过平模挤出熔融组合物以形成平均厚度小于或等于50微米的膜。